2023 Oregon Statutes 459A.750 – Recycling and waste reduction component of curriculum; teachers guide; informational materials

2021 Oregon Statutes 459A.750 – Recycling and waste reduction component of curriculum; teachers guide; informational materials

2019 Oregon Statutes 459A.750 – Recycling and waste reduction component of curriculum; teachers guide; informational materials

2017 Oregon Statutes 459A.750 – Recycling and waste reduction component of curriculum; teachers guide; informational materials

2015 Oregon Statutes 459A.750 – Recycling and waste reduction component of curriculum; teachers guide; informational materials

2013 Oregon Statutes 459A.750 – Recycling and waste reduction component of curriculum; teachers guide; informational materials

2009 Oregon Statutes 459A.750 – Recycling and waste reduction component of curriculum; teacher’s guide; informational materials